CN108945345B

CN108945345B - Water rescue equipment

Info

Publication number: CN108945345B
Application number: CN201810844633.9A
Authority: CN
Inventors: 郑健
Original assignee: Jiaxing Rongsheng Lifesaving Equipment Co ltd
Current assignee: JIAXING RONGSHENG LIFESAVING EQUIPMENT Co.,Ltd.
Priority date: 2017-05-11
Filing date: 2017-05-11
Publication date: 2020-08-04
Anticipated expiration: 2037-05-11
Also published as: CN108974277B; CN108945345A; CN107128460B; CN108974277A; CN107128460A

Abstract

The invention discloses water rescue equipment, which comprises a four-axis aircraft, a stepping motor, a U-shaped support, a nylon net and rear driving water wheels, wherein the stepping motor is fixedly connected to the lower end of the four-axis aircraft, an output shaft of the stepping motor is horizontally arranged, the U-shaped support is fixedly connected with the output shaft of the motor, the nylon net is connected onto the U-shaped support, and the rear driving water wheels are respectively and fixedly connected to the outer sides of the positions at the two ends of the U-shaped support and have two pushing directions; a camera is arranged at the lower end of the four-axis aircraft or in the middle of the U-shaped bracket; mounting brackets are formed on two sides of the front part of the U-shaped bracket; the mounting bracket is rotatably connected with a fishing plate component. The four-axis aircraft carries the U-shaped bracket provided with the nylon net to quickly reach a rescue place in a flying mode, and the four-axis aircraft has strong maneuverability; especially when the drowning person has sunk under the water, the rescue equipment can submerge under the water to drag up the drowning person and timely transport to the bank, which is beneficial to the rescue personnel who arrive later to carry out more timely rescue.

Description

Water rescue equipment

Technical Field

The invention belongs to the field of remote control type rescue equipment, and particularly relates to water rescue equipment.

Background

At present, when drowners are rescued on the sea and rivers, the drowners are mostly searched and rescued by manually driving ships to rescue places, because the gold time for rescuing the drowners is 4-6 minutes, if rescue is carried out in the gold time, the success rate of saving lives reaches 90 percent, however, the existing manual search and rescue mode takes longer time, and more time is spent on the way from starting places to rescue places. In addition, after a drowning person sinks below the water surface, search and rescue personnel need to submerge for search and rescue, and the search and rescue speed completely depends on the physical strength of the rescue personnel. The survival rate of the drowned person after being saved is low due to the above reasons.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the defects in the prior art, the water rescue equipment which is novel in structure, can quickly reach the rescue place and can be used for rescuing quickly is provided.

In order to realize the purpose of the invention, the following technical scheme is adopted for realizing the purpose: a water rescue device comprises a four-axis aircraft, a stepping motor, a U-shaped support, a nylon net and two rear driving water wheels, wherein the stepping motor is fixedly connected to the lower end of the four-axis aircraft, an output shaft of the stepping motor is horizontally arranged, the U-shaped support is fixedly connected with the output shaft of the stepping motor, the nylon net is connected to the U-shaped support, and the two rear driving water wheels are fixedly connected to the outer sides of the positions of the two ends of the U-shaped support respectively and are vertical to; a camera is arranged at the lower end of the four-axis aircraft or in the middle of the U-shaped bracket;

mounting brackets are formed on two sides of the front part of the U-shaped bracket; a fishing plate component is rotatably connected to the mounting bracket; the fishing plate component is rotationally connected to the mounting bracket through a rotating shaft; one side of the mounting bracket is fixedly connected with a shaft end motor, and an output shaft of the shaft end motor is fixedly connected with the rotating shaft; two electric push rods are fixedly connected to the rotating shaft near the two mounting brackets; the end part of the electric push rod is rotatably connected with a fishing plate; the fishing plate and the electric push rod rotate relatively through the rotating motor; the rotating motor is fixedly connected to the boss of the fishing plate; an output shaft of the rotating motor is fixedly connected with the end part of the electric push rod;

a controller is installed in the four-axis aircraft, and driving motors of four fans, driving motors of two rear driving water wheels, a stepping motor, a shaft end motor, a rotating motor and a camera of the four-axis aircraft are respectively and electrically connected with the controller; the controller is communicated with the remote controller through radio;

when the rescue equipment is in a standby state, four fans of the four-axis aircraft are all in a state of facing downwards vertically; the electric push rod faces downwards vertically and is in a contraction state, and the fishing plate rotates to the contraction state attached to the electric push rod; the controller controls the stepping motor to drive the U-shaped bracket to rotate to a vertical state;

when a person falling into water needs to be rescued, the rescue equipment flies to a rescue place from a starting place through a four-axis aircraft.

1) After the rescue place is reached, if the person to be rescued is seen to be located on the water surface through the camera, the controller is used for controlling the two rear driving water wheels to work through the remote controller, and meanwhile, the stepping motor is controlled to rotate to enable the U-shaped support to be gradually changed from a vertical state to a state which forms an included angle of 10-30 degrees with the horizontal direction; the four-axis aircraft is kept parallel to the horizontal direction;

the back-driving water wheel generates a horizontal component force to drive the rescue equipment to move towards a person to be rescued, the controller controls the shaft end motor and the electric push rod to rotate the electric push rod upwards and extend the electric push rod to be just longer than the rear end of the U-shaped support, the rotating motor is controlled to enable the fishing plate to be unfolded and to be vertical to the electric push rod, when the person to be rescued climbs onto the nylon net, the shaft end motor is controlled to enable the electric push rod to rotate back to the horizontal position, the controller is enabled to increase the output power of the four fans of the back-driving water wheel and the four-axis aircraft through the remote controller, and the horizontal component force generated by the back-;

2) after the rescue device arrives at a rescue place, if the camera sees that the person to be rescued sinks below the water surface, the controller is enabled to reduce the output power of the quadcopter through the remote controller, so that the rescue device submerges into the water to search the person to be rescued;

2.1) when the camera finds that the person to be rescued is in the sinking process, the controller controls the two rear driving water wheels to work through the remote controller, and simultaneously controls the stepping motor to rotate so that the U-shaped support is gradually changed from a vertical state into a state forming an included angle of 10-30 degrees with the horizontal direction; the four-axis aircraft is kept parallel to the horizontal direction; the controller controls the shaft end motor and the electric push rod to extend the electric push rod to the rear end of the U-shaped support and to be parallel to the U-shaped support; controlling a rotating motor to enable the fishing plate to be unfolded to be perpendicular to the U-shaped support;

the rescue equipment is driven to move towards the person to be rescued by the horizontal component force generated by the rear driving water wheel until the nylon net moves to the position below the body of the person to be rescued, the controller controls the stepping motor to rotate through the remote controller so that the U-shaped support rotates to the horizontal state, and the four-axis aircraft keeps parallel to the horizontal direction; then the controller increases the output power of the rear driving water wheel and the four fans of the four-axis aircraft to push the rescued person to move upwards to the water surface;

then the controller controls the stepping motor to rotate through the remote controller so that the U-shaped support rotates to a state of forming an included angle of 5-15 degrees with the horizontal direction, the four-axis aircraft keeps parallel to the horizontal direction, meanwhile, the output power of the rear driving water wheel is increased, the component force in the vertical direction generated by the rear driving water wheel keeps unchanged, and the rescue equipment and the rescuers are driven to move towards the bank side through the horizontal component force generated by the rear driving water wheel;

2.2) when the camera finds that the person to be rescued sinks into the water bottom, after the device to be rescued falls to the water bottom, the controller controls the stepping motor to rotate through the remote controller, so that the U-shaped support is gradually changed from a vertical state to a state forming an included angle of 10-30 degrees with the horizontal direction, the four-axis aircraft keeps a state forming an included angle of 30-60 degrees with the horizontal direction, the U-shaped support keeps an inclined state through vertical downward component force generated by the four-axis aircraft, and the U-shaped support is pushed to slide along the water bottom through horizontal component force generated by the four-axis aircraft;

when the rescue equipment is close to a person to be rescued, the middle of one end of the rescue equipment, which is provided with a rear driving water wheel, is aligned with the body side of the person to be rescued to move, the controller controls the shaft end motor and the electric push rod to enable the electric push rod to rotate upwards and extend to be longer than the rear end of the U-shaped support, the rotary motor is controlled to enable the fishing plate to be unfolded and to be perpendicular to the electric push rod, the body of the person to be rescued is located between the tail end of the U-shaped support and the fishing plate, the electric push rod is controlled to contract a part, after more than half of the body of the person to be rescued is located above the nylon net, the controller is controlled to control the two rear driving water wheels to work through a remote controller, so that the body of the person to be rescued floats upwards for a certain distance;

then, the controller controls the stepping motor to rotate through the remote controller so that the U-shaped bracket rotates to a horizontal state, and the four-axis aircraft keeps parallel to the horizontal direction; controlling a shaft end motor to rotate to enable an electric push rod to be parallel to the U-shaped support, and simultaneously controlling an electric control push rod to contract to enable the fishing plate to be flush with the tail end of the U-shaped support; then the controller increases the output power of the rear driving water wheel and the four fans of the four-axis aircraft to push the rescued person to move upwards to the water surface;

and then the controller controls the stepping motor to rotate through the remote controller so that the U-shaped support rotates to a state of forming an included angle of 5-15 degrees with the horizontal direction, the four-axis aircraft keeps parallel to the horizontal direction, the output power of the rear driving water wheel is increased, the component force in the vertical direction generated by the rear driving water wheel keeps unchanged, and the rescue equipment and the rescuers are driven to move towards the bank through the horizontal component force generated by the rear driving water wheel.

As a preferable scheme: and a supporting rod is fixedly connected between two end parts of the rear end of the U-shaped support, and the rear end of the nylon net is connected to the supporting rod.

As a preferable scheme: air bag containing grooves are formed in the lower ends of the two sides of the U-shaped support along the length direction, strip-shaped air bags extending out of the lower ends of the air bag containing grooves after being inflated are installed in the air bag containing grooves, and clamping protrusions used for limiting uninflated air bags in the air bag containing grooves are formed on the side walls of the two sides of the air bag containing grooves in a staggered mode along the length direction of the air bag containing grooves; gas storage bottles for inflating the air bags are further mounted on two sides of the U-shaped support, the outlet ends of the gas storage bottles are connected with electromagnetic valves, and the air outlet ends of the electromagnetic valves are connected with the air bags through pipelines; the electromagnetic valve is electrically connected with the controller through a lead.

As a preferable scheme: two rollers are rotatably arranged between two sides of the U-shaped support close to the front end and the rear end, the nylon net sleeve forms a conveying net belt between the two rollers, and a motor used for driving the rollers and the nylon net to rotate is arranged at one end, located on one roller, of the U-shaped support.

As a preferable scheme: the both ends fixedly connected with cross-section that the nylon wire is close to U type support both sides is the columniform has elastic position circle, the inner wall of U type support both sides is installed with position circle cooperation sliding connection's C shape snap ring.

As a preferable scheme: u type support front end intermediate position shaping has one to hold step motor's motor portion of holding, step motor's pivot is stretched out to step motor's both ends, the both sides fixed connection of pivot both ends and motor portion of holding.

Compared with the prior art, the invention has the beneficial effects that: the four-axis aircraft carries the U-shaped bracket provided with the nylon net to quickly reach a rescue place in a flying mode, and the four-axis aircraft has strong maneuverability; especially when the drowning person has sunk under the water, the rescue equipment can submerge under the water to drag up the drowning person and timely transport to the bank, which is beneficial to the rescue personnel who arrive later to carry out more timely rescue.

In order to reduce the resistance of the rescue equipment in the submerging process and the ascending process and furthest shorten the rescue time, the rescue equipment is supported by the U-shaped support, the net-shaped nylon net is used as a main body part for conveying drowners, the resistance of submerging and ascending can be obviously reduced, and the soft nylon net avoids the injury to the drowners. The nylon net of in-process that rises can make the most health of drowning person remove the intermediate position of nylon net because the flexible characteristic of self to electric putter and drag for the effect that the board played the railing, ensure that drowning person can not follow the landing on the rescue equipment.

When drowned person sinks into submarine (seabed or river bottom), rescue equipment passes through the gyro wheel and slides at the submarine and be close to drowned person, lifts up one section distance with drowned person through back drive water wheels cooperation nylon net and makes the nylon wire remove drowned person below completely through four shaft air vehicle's thrust after, on can transporting the surface of water with drowned person equally fast, and efficiency of suing and labouring is far higher than artifical dive and is rescued. Certainly, in order to ensure that the drowned person is rescued in time, the first-aid personnel can drive the ship to the rescue place when the rescue equipment does not reach the bank, so that the drowned person can be rescued in the shortest time after being transported to the water surface, and the survival rate is ensured.

In order to further shorten the rescue time, the nylon net is arranged between the two rollers and is driven to rotate by the motor, and after part of the body of a drowning person is positioned on the nylon net, the motor drives the nylon net to rotate to form a transmission net belt, so that the drowning person is quickly lifted onto the nylon net.

Because the rescue equipment is in order to guarantee the portability of the rescue equipment, and the difference of rescue time is large, an air bag is additionally arranged below the U-shaped support, after the rescue equipment floats on the water surface, or in the floating process, the electromagnetic valve can be opened to enable the air bag to be filled with compressed air in the air storage bottle, and the air bag automatically slides out of the air bag containing groove in the volume expansion process. Under the condition that the electric energy of the rescue equipment is insufficient, the air bag is opened to generate buoyancy, the four-axis aircraft and the rear driving water wheel are not needed to generate lift force, the consumption of the electric energy is reduced, and the condition that a rescued person falls into water again due to insufficient electric power supply of the rescue equipment is avoided under an emergency condition.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention in the standby and flight states.

Fig. 2 is a schematic structural view of the U-shaped bracket of the present invention when it is changed from a vertical state to an inclined state.

Fig. 3 is a schematic view showing the state of the rescue capsule in the process of moving the rescuee up to the water surface.

Fig. 4 is a schematic view of the structure state in the underwater rescue process of the invention.

FIG. 5 is a structural view of the present invention in the inflated condition of the airbag.

Fig. 6 is a schematic view of the mounting structure of the airbag.

Fig. 7 is a schematic view of an installation structure of a nylon net.

1. A U-shaped bracket; 11. a nylon mesh; 12. a support bar; 13. a motor accommodating part; 14. an air bag containing groove; 15. clamping the bulge; 16. mounting a bracket; 17. a motor; 18. a roller; 2. a four-axis aircraft; 21. a first fan; 22. a second fan; 3. a stepping motor; 4. a rear driving water wheel; 5. fishing out the plate assembly; 51. an electric push rod; 52. fishing the plate; 53. a shaft end motor; 54. a rotating shaft; 55. a rotating electric machine; 56. a boss; 6. a gas cylinder; 61. an electromagnetic valve; 7. an air bag; 8. a camera is provided.

Detailed Description

Example 1

As shown in fig. 1 to 4, the embodiment is a water rescue device, which includes a quadcopter 2, a stepping motor 3 fixedly connected to the lower end of the quadcopter and having an output shaft horizontally arranged, a U-shaped bracket 1 fixedly connected to the output shaft of the stepping motor, a nylon net 11 connected to the U-shaped bracket, and two rear driving water wheels 4 fixedly connected to the outer sides of the two end portions of the U-shaped bracket respectively and having two pushing directions perpendicular to the U-shaped bracket; the camera 8 is installed to four shaft air vehicle's lower extreme or U type support intermediate position.

Mounting brackets 16 are formed on two sides of the front part of the U-shaped bracket; a fishing plate component 5 is rotatably connected to the mounting bracket; the fishing plate component is rotatably connected to the mounting bracket through a rotating shaft 54; one side of the mounting bracket is fixedly connected with a shaft end motor 53, and an output shaft of the shaft end motor is fixedly connected with the rotating shaft; two electric push rods 51 are fixedly connected to the rotating shaft near the two mounting brackets; the end part of the electric push rod is rotatably connected with a fishing plate 52; the fishing plate and the electric push rod rotate relatively through the rotating motor 55; the rotating motor is fixedly connected to a boss 56 of the fishing plate; and an output shaft of the rotating motor is fixedly connected with the end part of the electric push rod.

A controller is installed in the four-axis aircraft, and driving motors of four fans, driving motors of two rear driving water wheels, a stepping motor, a shaft end motor, a rotating motor and a camera of the four-axis aircraft are respectively and electrically connected with the controller; the controller communicates with the remote controller through radio.

It should be noted that, still install the battery for each motor and controller power supply in the four shaft air vehicle to, all seal through sealed bearing between the output shaft of each motor and the motor casing, make four shaft air vehicle and back drive water wheels homoenergetic normally work under water.

The four-axis aircraft is a four-axis aircraft with four fans in the prior art, and components such as a rear driving water wheel, a stepping motor and the like connected with a controller simply control the rotating speed or positive and negative rotation of the four-axis aircraft, and are easy to realize by a person skilled in the art, are not important contents of the invention, and are not described in detail herein.

When the rescue equipment is in a standby state, four fans of the four-axis aircraft are all in a state of facing downwards vertically; the electric push rod faces downwards vertically and is in a contraction state, and the fishing plate rotates to the contraction state attached to the electric push rod; the controller controls the stepping motor to drive the U-shaped support to rotate to a vertical state, and the four-axis aircraft is directly controlled to take off when rescue is needed.

1) After the rescue place is reached, if the person to be rescued is seen to be located on the water surface through the camera, the controller is used for controlling the two rear driving water wheels to work through the remote controller, and meanwhile, the stepping motor is controlled to rotate to enable the U-shaped support to be gradually changed from a vertical state to a state which forms an included angle of 10-30 degrees with the horizontal direction; the quadcopter remains parallel to the horizontal.

The back drive water wheels generate horizontal component force to drive the rescue equipment to move towards a person to be rescued, the controller controls the shaft end motor and the electric push rod to rotate the electric push rod upwards and extend to a position just longer than the rear end of the U-shaped support, the rotating motor is controlled to enable the fishing plate to be unfolded and perpendicular to the electric push rod, when the person to be rescued climbs on the nylon net, the shaft end motor is controlled to enable the electric push rod to rotate back to the horizontal position, the electric push rod and the fishing plate play a role in a railing to prevent the person to be rescued from falling into the water again, the controller is enabled to increase output power of the four fans of the back drive water wheels and the four fans of the four-axis aircraft through the remote controller, and the horizontal component force.

2) After the rescue device arrives at a rescue place, if the camera sees that the person to be rescued is submerged below the water surface, the controller is controlled to reduce the output power of the quadcopter through the remote controller, so that the rescue device submerges into the water to search the person to be rescued.

2.1) when the camera finds that the person to be rescued is in the sinking process, the controller controls the two rear driving water wheels to work through the remote controller, and simultaneously controls the stepping motor to rotate so that the U-shaped support is gradually changed from a vertical state into a state forming an included angle of 10-30 degrees with the horizontal direction; the four-axis aircraft is kept parallel to the horizontal direction; the controller controls the shaft end motor and the electric push rod to extend the electric push rod to the rear end of the U-shaped support and to be parallel to the U-shaped support; and controlling a rotating motor to enable the fishing plate to be unfolded to be vertical to the U-shaped support.

The rescue equipment is driven to move towards the person to be rescued by the horizontal component force generated by the rear driving water wheel until the nylon net moves to the position below the body of the person to be rescued, the controller controls the stepping motor to rotate through the remote controller so that the U-shaped support rotates to the horizontal state, and the four-axis aircraft keeps parallel to the horizontal direction; and then the controller increases the output power of the rear driving water wheel and the four fans of the four-axis aircraft to push the rescued person to move upwards to the water surface.

2.2) when the camera finds that the person to be rescued sinks into the water bottom, after the device to be rescued falls to the water bottom, the controller controls the stepping motor to rotate through the remote controller, so that the U-shaped support is gradually changed from a vertical state to a state of forming an included angle of 10-30 degrees with the horizontal direction, the four-axis aircraft keeps a state of forming an included angle of 30-60 degrees with the horizontal direction, the U-shaped support keeps an inclined state through vertical downward component force generated by the four-axis aircraft, and the U-shaped support is pushed to slide along the water bottom through horizontal component force generated by the four-axis aircraft.

When the rescue equipment is close to a person to be rescued, the middle of one end, provided with a rear driving water wheel, of the rescue equipment moves by aligning with the side of the person to be rescued, the controller controls the shaft end motor and the electric push rod to enable the electric push rod to rotate upwards and extend to be longer than the rear end of the U-shaped support, the rotating motor is controlled to enable the fishing plate to be unfolded and perpendicular to the electric push rod, the body of the person to be rescued is located between the tail end of the U-shaped support and the fishing plate, the electric push rod is controlled to contract a part, after more than half of the body of the person to be rescued is located above the nylon net, the controller is controlled to control the two rear driving water wheels to work through the remote controller, the body of the person to be rescued floats upwards for a certain distance, then the rear driving water wheels are controlled. The nylon net is directly used for shoveling the drowning person, so that the drowning person is easily accidentally injured, and the drowning person is lifted for a certain distance by the rear driving water wheel.

Then, the controller controls the stepping motor to rotate through the remote controller so that the U-shaped bracket rotates to a horizontal state, and the four-axis aircraft keeps parallel to the horizontal direction; controlling a shaft end motor to rotate to enable an electric push rod to be parallel to the U-shaped support, and simultaneously controlling an electric control push rod to contract to enable the fishing plate to be flush with the tail end of the U-shaped support; and then the controller increases the output power of the rear driving water wheel and the four fans of the four-axis aircraft to push the rescued person to move upwards to the water surface.

A supporting rod 12 is fixedly connected between two end parts of the rear end of the U-shaped support, and the rear end of the nylon net is connected to the supporting rod. The supporting tube is a round thin rod with the diameter of 5-15mmd, can be used for fixing the rear end of the nylon net, has smaller diameter and is beneficial for a drowning person to move to the nylon net.

U type support front end intermediate position shaping has one to hold step motor's motor portion 13, step motor's pivot is stretched out to step motor's both ends, the both sides fixed connection of pivot both ends and motor portion.

In-process on four shaft air vehicle and two back drive water wheels drive rescue equipment rose the surface of water by under water, four shaft air vehicle has two fans to be located the top of nylon wire, marks as second fan 22, has the place ahead that two fans are located U type support, marks as first fan 21, at the ascending in-process of rescue equipment, first fan work, the second fan is out of work, avoids the second fan to rotate the rivers that produce and causes the impact to drowned person's health, leads to drowned person to follow the online landing of nylon even.

Example 2

With reference to fig. 5 to 6, the present embodiment is modified from embodiment 1 as follows: air bag containing grooves 14 are formed in the lower ends of the two sides of the U-shaped support along the length direction, strip-shaped air bags 7 which are inflated and extend out of the lower ends of the air bag containing grooves are installed in the air bag containing grooves, and clamping protrusions 15 used for limiting uninflated air bags in the air bag containing grooves are formed on the side walls of the two sides of the air bag containing grooves in a staggered mode along the length direction of the air bag containing grooves; gas storage bottles 6 for inflating the air bags are further mounted on the two sides of the U-shaped support, the outlet ends of the gas storage bottles are connected with electromagnetic valves 61, and the air outlet ends of the electromagnetic valves are connected with the air bags through pipelines; the electromagnetic valve is electrically connected with the controller through a lead.

It should be noted that the airbag is not opened in non-critical situations, which would otherwise affect the diving of the rescue equipment.

Example 3

With reference to fig. 7, the present embodiment is modified from

embodiment

1 or 2 as follows: the supporting rod 12 is removed, two rollers 18 are rotatably arranged between two sides of the U-shaped support close to the front end and the rear end, the nylon net sleeve forms a conveying net belt between the two rollers, and a motor 17 for driving the rollers and the nylon net to rotate is arranged at one end of the U-shaped support, which is positioned at one roller.

The both ends fixedly connected with cross-section that the nylon wire is close to U type support both sides is the columniform has elastic position circle, the inner wall of U type support both sides is installed with position circle cooperation sliding connection's C shape snap ring (not shown in the figure).

The drowning person, the person to be rescued and the person falling into water are all the same concept.

Of course, in order to ensure that the drowned person is rescued in time, the first-aid personnel can drive the ship to the rescue place when the rescue equipment does not reach the bank, so that the drowned person can be rescued in the shortest time after being transported to the water surface, and the survival rate is ensured.

Claims

1. A water rescue device, characterized in that: the device comprises a four-axis aircraft, a stepping motor, a U-shaped support, a nylon net and two rear driving water wheels, wherein the stepping motor is fixedly connected to the lower end of the four-axis aircraft, an output shaft of the stepping motor is horizontally arranged, the U-shaped support is fixedly connected with the output shaft of the stepping motor, the nylon net is connected onto the U-shaped support, and the two rear driving water wheels are fixedly connected to the outer sides of the positions at the two ends of the U-shaped support respectively and; a camera is arranged at the lower end of the four-axis aircraft or in the middle of the U-shaped bracket;

two rollers are rotatably arranged between two sides of the U-shaped bracket close to the front end and the rear end, the nylon net sleeve forms a conveying net belt between the two rollers, and one end of the U-shaped bracket, which is positioned at one roller, is provided with a motor for driving the rollers and the nylon net to rotate;

the both ends fixedly connected with cross-section that the nylon wire is close to U type support both sides is the columniform has elastic position circle, the inner wall of U type support both sides is installed with position circle cooperation sliding connection's C shape snap ring.

2. A water rescue apparatus as claimed in claim 1, wherein: when a person falling into water needs to be rescued, the rescue equipment flies to a rescue place from a starting place through a quadrotor;

3. A water rescue apparatus as claimed in claim 1, wherein: and a supporting rod is fixedly connected between two end parts of the rear end of the U-shaped support, and the rear end of the nylon net is connected to the supporting rod.